Rory McIlroy's pursuit of a second PGA Championship hit an unexpected snag Tuesday, when a painful blister on his right foot forced him to cut his practice round short at Aronimink Golf Club. The Masters champion, who arrived in Newtown Square, Pennsylvania, as one of the favorites, managed just three holes before removing his shoe on the fourth tee and heading back to the clubhouse in a cart.

The blister, located under the nail of his right pinky toe, has been bothering McIlroy since his final round at the Truist Championship on Sunday—his only tournament since winning the green jacket in April. "I can't really get to it, so it's a little sore," McIlroy admitted after that round. "But I'll be all right."

Ever the competitor, McIlroy isn't letting this setback derail his preparation. He told Irish media earlier Tuesday that he had the nail removed and is actively searching for shoes that will minimize discomfort. With the opening round still a day away, he has options: another practice session or, perhaps, some well-timed rest.

Meanwhile, Justin Rose is feeling right at home in the Philadelphia suburbs. The 45-year-old Englishman has a storied history on the Main Line, including a 2013 U.S. Open victory at Merion and a win at the 2010 AT&T National. He also came heartbreakingly close at Aronimink, losing to Keegan Bradley in a playoff at the 2018 BMW Championship.

Rose credits the area's familiar feel for his success. "It feels very familiar to the part of England I live in," he said. "Very leafy, very green. Even this time of year, the spring here is very much like the spring in England." He also praised the classic course designs of Merion and Aronimink, which suit his game perfectly.

For golf fans, this week's PGA Championship is shaping up to be a test of resilience and comfort—both on the course and, for McIlroy, in the shoe department.